Feed mechanism for recording devices



Oct, ,3, 1950 s. GORHAM FEED MECHANISM FOR RECORDING DEVICES 4 Sheets-Sheet 1 Filed NOV. 29, 1947 ATTORNEY Oct. 3, 1950 a. GORHAM 2,524,564 FEED MECHANISM FOR RECORDING DEVICES nuduqv. 29; 1947 4 Sheets-Sheet 2 Fig.2

ATTORNEY Oct. 3, 1950 I GQRHAM I 2,524,564 FEED MECHANISM FOR REGORDING DEVICES mu Nov. .29; 1947 '4 Sheets-Sheet s JNVENTOR.

8, ATTORNEY Ogt. 3, 1950 G. GORHAM FEED MECHANISM FOR RECORDING DEVICES Filed Nov. 29, 1947 4 Sheets-Sheet 4 mmvrm W ATT OR N EY Patented Oct. 3, 1950 FEED MECHANISM FOR RECORDING DEVICES George Gorham, New York, N. Y., assignor, by mesne assignments, to Technicon Cardiograph Corporation, New York, N. Y.

Application November 29, 1947, Serial No. 788,801 (or. 346136) I 19 Claims.

This invention relates to recorders and more particularly to improved means for feeding or 7 moving the chart paper or record web in relation to the marking element or elements of the recorder.

While useful for other purposes, the present invention was developed primarily for direct writing electro-cardiographs such as that'shown, for example, in my application Ser. No. 762,613, filed July 22, 1947, wherein a multiple-lead" di rect writing electro-ca-rdiograph recorder is disclosed and claimed- The device of the present invention istherefore shown in conjunction with a plurality of marking elements, but it will'be understood that the same device may be used in conjunction with a single marking element, and

it will be understood further that said device may be used in various recorders other than electrocardiograph recorders wherein a record is made on a moving web of paper or other suitable sheet material.

One object of the present invention is the provision of improved means for supporting and feeding the record web in relation to themarking element.

Another object is to provide a.recordweb reeding device which is of such construction as to facilitate the insertion of the web in the device for operation by the latter for moving the web on its support at therecording station The above and other objects, features and advantages of the present invention will be fully understood from the following descriptionwith reference to the accompanying drawings which.

however, are to be considered asillustrative of provided with a device embodying the present invention, parts being broken away forthe purpose of illustration; 7

Fig. 2 is a plan view of part of said recorder provided with said device;

Figs. 3 and 4 are sectional views onthe lines 3-45 and 44,respectively of Fig. 2;

Fig.5 is a sectional view on the line 5-5 of Fig. 2;

Fig. 6 is a view similar to Fig. 5;but in a different position of the related parts; i

Fig. 7 is a sectional view on the line T.'! of 5, portions being omitted for the purpose of illustration; 2

Fig. 8 is a sectional view on the line 8-8 of Fig. 5;

Fig. 8A is a fragmentary sectional view on the same relative line as Fig. 8 but showing dinerent relative positions of certain parts;

Fig. 9 is a sectional view on the line 9-9 of Fig. 5;

Fig- 10 is a sectional view on the line Ill-I0 of Fig. 2, but with certain parts in diiierent relative positions.

In the preferred embodiment of the invention, the support ID for the record-Web W at the webmarking station, where the web is marked by one or more marking elements 12 (see Figs. 1, 2 and 5), is in the form of a bar having a narrow edge [4. as described in my above-mentioned application. The web is caused to move in the direction of its length and is directed in its travel over said edge of support .lfl'so as to form a fold line l6 at said edge longitudinally of said edge and transversely of the web, whereby a very narrow or line-like portion of the web is presented to the marking elements 12 at each instant-during the travel of the web from the supply roll R in the operation of the. recorder. As shown in Fig. 5,

the guide rollers l8 and, 2!] are provided for .di-

rectingthe web in this folded relation to and from edge [6' of web-support Ill. Frornguide roller 18 the web passes over a roller 22, and over the driven feed roll 24 and then between the lat.- ter and the companion pressure roll An inclined plate 28 is provided forwardly of rolls 24 and 26 for directing the web to a suitable receptacle (not shown).

Web support It andirollers 26 and 26 are mounted for unitary turningflmovement. about the axis of driven roller 24 to and from the webfeed or operative positions shown in Fig. 5 and, concomitantly, from and to the position shown in Fig. 6. In the latter position, the web support Iii is retracted and rolls 22, 24 and 2G arerelatively positioned for the insertion of the web between rol1s'22 and 24 and between the latter and roll 26. A web guide-plate carried by a ba1r32 is provided to guide the leading end of the web .between rolls 24 and 26 after said end of the .web is inserted between rolls 22 and 2% in the position of the parts shown in Fig. 6. It will. be noted that rolls 22- and26 are spaced from. roll 24, in the positions shown in Fig. 6, thus allowing the Web to move freelytherebetween, roll guiding the leading endof the web after it passes .over guide-plate 30. 1

After the web W is thus inserted between rolls 22 and 24-andbetween rolls 24 and 26, the unit is moved forwardly, i. e., in the direction of arrow A (Fig. 6) through about fifteen degreesat which position of the unit roll 22 is moved toward roll 24 to a position at which roll 22 presses the web W against roll 24 (Fig. 8A). In this position of the unit roll 24, when turned by hand, as hereinafter described may be operated in conjunction with roll 22 to feed the desired length of web through rolls 22 and 24 and between rolls 24 and 26. Thereafter, the unit is moved in the same direction to its position shown in Fig. 5, and during that movement roll 22 is moved away from roll 24, roll 26 being maintained in spaced relation to roll 24 until the unit is in its operative position shown in Fig. 5. In the course of the movement of the unit from the position shown in Fig. 6 to the position shown in Fig. 5, support l and guide roller 20 engage the web l0 and dispose the latter as shown in Fig. 5, a sufficient length of the web being drawn from the supply roll R. A spring-pressed plate 34 is provided as a friction drag on roll R for tensioning the web.

The means provided for accomplishing the above described operations and functions will now be described in detail.

The driven feed roll 24 is carried by a rotary shaft 36 (Fig. 8) provided with reduced end portions 38 and 4B which are journalled for rotation in bearings carried by the spaced parts 42 and 44 of the frame 45 of the recorder. Guide roller [8 is mounted at its opposite ends in frame parts 42 and 44, respectively, said ends being mounted in anti-friction bearings 48 as indicated in Fig. 7. Guide roller 28, roll 26, plate 28 and web support H) are carried by amovable frame 50 which includes the opposite side plates 52 and 54 turnably mounted on the ends 38 and 40 of the driven feed roll shaft 36 relatively thereto. A cross member 56 is connected at its opposite ends in any suitab e way, as by screws 58 to said side plates 52 and 54 for holding the latter in fixed s aced relation. The opposite ends of web support ID are secured to said frame plates 52 and 54, and the opposite ends of guide roller 20 are mounted in said side plates in antifriction bearings 58 as indicated in Figs. 4 and '7.

Guide-plate bar 32 is mounted at its opposite ends in the stationary frame parts 42 and 44 as indicated at 8!) in Fig. '7 with respect to the end of which is mounted in part 42, the opposite end of said bar being similarly mounted in part 44. The opposite end portions of bar 32 are cylindrical as indicated at an in Fig. '7 so that said bar may turn about its longitudinal axis. An arm 62 is fixed to each of the opposite ends 60 of bar 32 for supporting the ends of the spindle 54 of roller 22. Thus roller 22 is mounted for pivotal movement about the axis of bar 32 toward and away from driven roll 24. A hairpin spring 66 (Figs. 3, '7 and 8) is secured to each of thestationary frame parts 42 and 44 and acts on the adjacent end of spindle 64 of roller 22 to bias the latter toward roll 24, as is readily apparent. Roller 22 is moved toward and away from roll 24 in the course of the movement of frame 50 from the position thereof shown in Fig. 6 to the position thereof shown in Fig. 5. as described above, and it will be noted that in the latter or normal position, roller 22 is spaced from roll 24 and acts only as a guide roller for web W in directing the latter over roll 24 during the travel of the web.

The movement of roller 22 toward and away from roller 24 is accomplished under the control of frame'5i3 and, more particularly by cams carried by said frame. Specifically, as here shown,

each of the side plates 52 and 54 is formed with an integral cam 68 (Figs. 4 and 8) which engage the companion followers 10, respectively, carried by roller 22, said cam followers being held in engagement with their companion cams by springs 66. It will be understood that the edges of cam 68, which are engaged by cam followers 10 on the shaft of roller 22, are designed (1) so that when the frame is in its fully retracted position (Fig. 6) roller 22 is spaced from roll 24 so that the leading end of the web may be freely inserted, as described above, (2) so that after the web is inserted and the frame 50 is moved to an intermediate position about 15 in the'direction of the arrow A, the roller 22 moves toward roll 24 and presses the web against said roll (Fig. 8A) for feeding of the web by manual operation of roll 24, and (3) so that movement of the frame 58 from said intermediate position to the operative position thereof (Fig. 5) roller 22 is spaced'from roll 24 and acts as a guide roller.

Roll 26 which normally co-acts with driven roll 24 in moving the record web W during the operation of the recorder is carried by frame 50 and is movable toward and away from roll 24 automatically by movement of said frame. The spindle 12 of roll 26 is mounted at its opposite ends in blocks 14 which are slidably movable in the ends in blocks 14 which are slidably movable in guides 76 integral with or carried by frame plates 52 and 54. Said blocks 14 are biased by springs 18 for movement toward roll 24, the opposite ends of each spring bearing on the companion block 14 and the end plate 80 of the companion guide 16. A stationary centering pin 82 is provided in each guide 18 for the companion spring, block 14 having a hole 84 (Fig. 4) to provide for movement of said block longitudinally of said pin, and the outer end of said pin being fixed to end plate 80. Spindle 12 projects through the companion guide blocks 14 and terminates in outer end portions 86 which engage the stationary cams 88 which are carried by stationary frame parts 42 and 44. It will be noted that cams 88 are positioned with reference to the turning axis of roll 24, which is the turning axis of frame 50. Referring to Figs. 5 and 6 in conjunction with Fig. 3, it will be understood that when frame 50 is turned in the direction of the arrow B from the position shown in Fig. 5 to the position shown in Fig. 6, the ends 86 of the spindle 12 of roll 24 move upwardly along the vertical cam edges 90 and thereby move blocks 14, against the pressure of springs 18, to move roll 26 away from roll 24. Continued movement of frame 50 in the same direction causes spindle ends 86 to ride on the curved edges 92 of the companion cams 88, respectively, until the frame is in its fully retracted position shown in Fig. 6. A notch 93 is provided in the edge of each cam 88 in which the spindle ends 86 are releasably engageable for holding the frame 50 releasably in the intermediate position in which roller 22 is in pressure-applying relation to roll 24 (Fig. 8A). Thus, notches 93 in conjunction with spindle ends 86 provide means for releasably holding the frame in a position in which rolls 22 and 24 may be manually turned for feeding the web, roll 24 being disconnected from its driving means as subsequently described. The leading end of the web W may be inserted and fed between and by rolls 22 and 24, when the frame 50 is in said intermediate position.

Provision is made for releasably locking frame 50 in the operative position thereof. For this purpose, a latching or looking member or lever 94 is pivotally mounted on frame plate 52 at 95 for releasable engagement with a catch 96 carried by part 42 of the main stationary frame.

Movable locking member 94 is provided with a notch 98in which catch .96 is engaged when movable frame 50 is in operative position as shown in Fig.6. Member 94 is held releasably in engagement with catch 66 by a spring I which is secured at one end toframe part 42 by the.

pin I02 and at its opposite end to member 94 by pin I04 carried by the latter. The means for releasing frame-locking member 94 from catch 96, whereby to release frame 50 from frame 46 for movement, comprises an arm I06 which is pivotally mounted on movable frame part 52 by the pivot screw I08. Said arm I06 has a notch H0 in which pin I04 of locking member 94: is engaged. When it is desired to unlock frame 50 from stationary frame 46, arm I06 is moved clockwise, viewing Fig. 5, whereby to move member 94 out of engagement with catch 96. Releasing member I06 is conveniently'operableby a bar or rod IIO which is connected at one end thereof to the outer end of member I06.' The opposite end of rod I I0 is connected to the outer end of an arm II2 which is pivotally connected to frame part 54 by the pivot screw II4. As shown in Fig. 1, bar H0 is conveniently located below plate 28 of frame '50 so that when-it is de sired to move said frame to its retracted position, this may be done by raising bar I I0 whereby t unlock the frame, and by continuing to move said bar in the same" direction engaging the same with the undersid'e of frame plate 28 and'moving the lattert'o the position shown in Fig; 6. When the frame 50'is returned to its normal or operative position (Fig. 5) locking member 94 automatically engages catch 96 and releasably locks said frame in 'saidposition. Frame 50 has an edge recess I05 for'pin I04.

i The main feed roll 24 is driven at a uniform rate by a motor M which is operatively connected to 'the shaft of said roll. Preferably a clutch and variable gear-ratio transmission indicated more'or less schematically at H6 is provided so that roll 24 may be driven at a selected speed. A

gear shift lever I I3 is provided for changing the gear ratio and for disengaging the transmission from the roll shaft 38. Itwill be understood that the variable gear and clutch mechanism may be of any suitable type and need not be described since such mechanisms are well known and do not per se form part of the present invention. However, it may be noted that I prefer to use a change-speedand clutch mechanism having provision for operating roll 24 at two different uniform speeds one of which is twice the other. In Fig. 1, lever H6 is shown in its neutral position, the shaft of roll'24 being tie-clutched and there fore free to be turned manually by the hand wheel I which is fixed to the end portion 40 of said shaft. Said hand wheel I20 may be used to operate roll 24 for adjusting the web W preliminary to the operation of the recorder. In theposition of lever II8 shown in Fig. 8, the shaft'of roll 24 is operatively connected to the transmission gears for operation at the normal speed, and when the lever H8 is moved to its opposite position adjacentthe opposite end of the guide slot I22 the shaft of roll 24 is operatively connected for operation at twice the normal speed. It will be understood that the gear transmission mechanism I I6.may have provisio for more than two speeds.

The means and mechanisms for actuating the marking elements I2 are preferably of the construction shown and'claimed in my above mentioned application, but may be of any other suitable construction, and therefore need not be specifically described herein. It may be noted, however, that elements I2 are oscillated by their respective spindles I 24, in accordance with variations which are to be recorded, laterally of the web. As shown in Fig. 2, each spindle I24 is actuated by a member I26 which is connected by a rod I28 to a crank arm I30 fixed to the spindle I24. Members I26 are operated by the driving coils of an electro-magnetic device which operates in accordance with the variations to be recorded.

The supply roll R of the record web or chart paper is removably mounted for rotation on stationary cylindrical supports I25 and I21 carried by parts 42 and 44,- respectively, of the recorder frame 46. Support I25 is spring projected by the spring I29 of a known device and may be retracted to facilitate mounting the roll R in position. It will be readily understood that when one roll R is depleted, the core of spool I30 may be easilly removed by retracting the support I25 by the retracting pin I32. It will be understood, of course, that the means for mounting roll R for rotation to pay out the web, as the latter is drawn therefrom by the feed roll 24 and its companion pressure roll 26, may be of any other suitable construction.

Various changes'in the details of construction and in the arrangement of parts may be made in the device of the present invention without departing from the underlying idea and principles within the scope of the appended claims. The subject matter hereof is related to my application Ser. No. 100,449, filed June 21, 1949.

Having thus described my invention, what I claim and desire tosecure bv Letters Patent, is:

1. In a recorder provided with means for making a record-on a web of sheet'material, a support for the web, means including a driven feed roll and'a companion pressure roller for moving said web in the direction of its length on said support and in relation to said marking means in the recording operation, means in juxtaposition to said feed roll for guidingthe'web to the latt r, means mounting'said pressureroller'for move- ..ent in relation to said feed roll and said guide means from'a normal position in web feeding relation with said feed roll to a retracted webguiding position in which said pressure rolleris positioned in juxtaposition to said guide means whereby the leading end of the'web when advanced'on the surface of said guide'means and said driven roll is disposed between said pr ssure roller adjacent said feed roller to be pressed against said driven feed roll by said pressure rollerwhen the latter is returned to said normai position thereof. and a frame whichcarries said web support and which is mounted for movement from a position in which said supporting means is positioned'at one side of th ax s of said. fe d roll between the latterand said markin means, for supporting said' web, to a position in which said' supporting means is retracted from said position between said feed roll and marking means, said pressure roller being carried b said frame for said movement from said normal msti'on thereof to said retracted position thereof, said pressure roller b ing also mounted for movement on said frame in a direction away from said feed roll to reease'the pressure of said pressure roller on said feed roll when said pressure roller is in said 'retrated position thereof "in juxtaposition to said guide means, said guide means including a roller mounted for movement toward and away from said driven feed roll and operable when moved toward said feed roll to press the web against the latter for feeding the web by the conjoint action of said feed roll and said last mentioned roller while said first mentioned pressure roller is displaced from said normal position thereof.

2. In a recorder provided with means for marking a record on a web of sheet material, means including a driven feed roll and a companion pressure roller for'moving said web in the direo-- tion of its length in relation to said marking means, a frame mounted for turning movement about the axis of said feed roll, means carried by said frame and having an edge for supporting the web for the action thereon of said marking means when said frame is in a predetermined IDOSltlOIl thereof, said frame being movable about said axis to retracted positions to facilitate the insertion of the leading end of the web between said feed roll and said pressure roller and to adjust said web in guided position betweensaid feed roll and'said pressure roller, a Web-guide mounted independently of said frame, and a companion web-guide carried by and movable with said frame, said web-guides being disposed so as to be positioned below and at o posite sides of said edge of said web supporting means, when said frame is in said predetermined position, for directing the web upwa rdly to and downwardly from said edge during the travel of said web over said edge.

3. In a recorder rovided with means for marking a record on a web of sheet material, means including a driven feed roll and a companion press re roller for movin said web in the direction of its length in relation tosaid marking means, a frame mo nted'for turning movement about the axis of said feed roll, means carried by said frame and having an edge for supporting the web for the action thereon of said marking means w en said frame is in a predetermined rosition thereof, said frame'being movable about its axis to retracted positions to facilitate the ins rtion of the leading end of the web between s id feed. roll and said pressure ro ler and to adjust said web inguided position between said fe d roll and sa d nress rarollerya web-guide mounted inde endently of said frame, and a com ran on web-guide carried by and movable with said frame, said web-guides being dis osed so as to be positioned below and at opposite sides of said ed e of said web su porting means, wh n said frame is in said predetermined position, for directing the web upwardlvto and downwardly from said edge during the travel of said web over said edge. and an ad t onal web-guide 'mounted independently of said frame aja cent said'driven feed rol for d recting the web from one ofsaid first -entioned guides to saidfeeduoll.

4. In a recorder provided with means for markin a record on a web of'sheet'material, means ncludi g a driven feed ro l and a companion pressure roller for moving said web in th dir ction of its length in relation to said marking means. a frame mounted for turning movement about the axis of said feed roll, means carried bv said frame and'having an edge for supporting the web for the action thereon of said marking means wh n said frame is in a predetermined position thereof, said frame'being movable about its'axis to a retracted position" to facilitate the insertion of the leading and of the web betweenisaid feed roll and said pressure roller, a web-guide mounted independently of said frame, and a companion web-guide carried by and movable with said frame, said web-guides being disposed so as to be positioned below and at opposite sides of said edge of said web supporting means, when said frame is in said predetermined position, for directing the web upwardly to and downwardly from said edge during the travel of said web over said edge, and an additional web-guide mounted independently of said frame adjacent said driven feed roll for directing the web from one of said first-mentioned guides to said feed roll, said additional web-guide being mounted for limited movement toward and away from said feed roll and movable under the control of said frame to press the web against said feed roll in a retracted position of said frame for feeding the web by manual operation of said feed roll for disposing the web in operative relation to the latter preliminary to the feed of the web by said feed roll and said companion pressure roller.

5. In a recorder provided with means for marking a record on a web of sheet material, means including a driven feed roll and a companion pressure roller for moving said web in the direction of its length in relation to said marking means, a frame mounted for turning movement about the axis of said feed roll, means carried by said frame and having an edge for supporting the web for the action thereon of said marking means when said frame is in a predetermined position thereof, said frame being movable about said axis to a retracted position to facilitate the insertion of the leading end of the web between said feed roll and said pressure roller, said pressure roller being carried by said frame and having a limited movement thereon toward and away from said feed roll, and means with respect to which said frame is movable operatively connected to said pressure roller for moving the latter on said frame toward and away from said feed roll when said frame is moved about the axis of said feed roll, and a web-guide mounted for limited movement toward and away from said feed roll and movable under the control of said frame to press the web against said feed roll in a retracted position of said frame for feeding of the web by manual operation of said feed roll for disposing the web in operative relation to the latter preliminary to the feed of the web by said feed roll and said companion pressure ro ler.

6. In a recorder provided with means for marking a record on a web of sheet material, means including a driven feed roll and a companion pressure roller for moving said web in the direction of its length in relation to said marking means, a frame mounted for turning movement'about the axis of said feed roll, means carried by said frame and having an edge for supporting the Web for the action thereon of said marking means when said frame is in a predetermined position thereof, said frame being movable about said axis to a retracted position to facilitate the insertion of the leading end of the web between said feed roll and said pressure roller, said pressure roller guiding said web in said retracted position, said pressure roller being carried b said frame and having a limited movement thereon toward and away from said feed roll, and cam means operatively connected to said pressure roller for moving the latter on said frame toward and away from said feed roll when said frame is moved about the axis of said feed roll.

'i'. In a recorder provided with means formarking a record on a web of sheetmaterial, means including a driven feed roll and-a companion pressure rollerfor moving saidweb in the direction of its length in relation to said marking means, a frame mounted for turning movement about the axis of said feed roll, means carried by said frame and having an edge for supporting the web for the action thereon of 'said'marking means when said frame is in a predetermined position thereof, said frame being movable-about said axis to a retracted position-to facilitatetheinsertion of the. leading end of the Web between said feed roll and said pressure roller, said pres-'- sure roller being carried by said frame-and hav ing a limited movement thereon toward and away from said feed roll, and meanswith respect to which said frame ismovable operatively connected to said pressure roller for moving the latter on said frame toward and away from said feed roll when said frameais moved aboutithe axis ofsaid feedroll, anda web-guidemounted for limited movement toward and-awayfrom' said feed .roll and movable under the-control of said frame to press-the-web againstsaid feedrollv ina retracted position of said frame for feeding of the web by manual operation of said .feed roll. for disposing the web in operative relation to the.

latter preliminary to the feed ;of the web by said feed rolland said companion pressure-roller; said frame having parts thereof provided withacamw formations engaging said web-guide foriefiecting;

saidmovement of the latter. toward andawayfrom said feed roll 8. In a recorder provided with means for marking a record=on aweb ofssheetmaterial,

means includi-nga driven feed roll andn-aecome panion 'pressureroller for. movingsaid webein? the." direction ofits length innrelationsto .saidmarking means, a ,frame mounted for, turning r movement aboutthe axis of said feed roll, meansicarriedvbysaid frame and having an edge for. supporting the. web. for the action thereon'of said-marking means whensaid framepis ina predetermined position thereof, said frame being movable about itsaxis to a retracted position-to facilitate the insertion of thelleadingiendof theweb between.

said feedroll and said pressureroller, a web,- guide mounted independentlybf saidframe, and a companion web-guides carried .by and movable with said frame, said,,web,-guides rbeingdisposedu so asto be positioned below and at opposite'sides-v ofsaid edge ofsaid web supporting means, when said frame is in saidpredetermined.position, for; directing the web. upwardly to and downwardly from said edgeduring-the travel of said webover said edge, and an, additional web-guide mounted t independently of saidframe adjacent said driven feed roll for directing theweb from, one ofsaid. first-mentioned guides to said A feed roll,, said additional web-guidebeing mounted for limited movement toward and away from said feed roll and movable under the control of said frame to press the web against said feed roll in a retracted position of said frame for feedingof the web by manual operation of said feed roll for disposing the web in operative relation to the latter preliminary to the feed of the web by said feed roll and said companion pressure roller, said frame having parts thereof provided with cam formationsengaging said web-guide for effecting said movement of the latter toward and-away from said feed roll.

9. In a recorder provided with means for-- marking a record'on aweb of "sheet material,

10 means including a driven feed roll and a companion pressure roller for moving said web in the direction of its length in relation to said marking means, a frame mounted for turning movement about the axis of said feed roll, means carried by said frame and having an edge for supporting the web for the action thereon of said marking means when said frame is in a prede termined position thereof, said frame being movable about said axis to a retracted position to facilitate the insertion of the leading end of the eb between said feed roll and said pressure roller, said pressure roller being carried by said frame and having a limited movement thereon toward and away from said feed roll, and cam means operatively. connected to said pressure roller for moving the latter on said frame toward and away from said feed roll when said frame is moved about the axisof said feed roll, and a web-guide mounted for limited movement toward and away from said feed roll and movable under; the control of said frame to press the web against said feed roll in a retracted position of said frame for feeding of the web by manual opera-, tion of said feed roll for disposing, the web in operative relation to the latter preliminary to the feed of the web by said feed roll and said companion pressure roller, said frame having parts thereof provided with cam formations engaging said web-guide for, effecting said movement of the latter toward and away from said feed roll.

10.1n a recorder provided with means for marking a record on a Web of sheet material, means including a driven feed roll and a companion pressure roller for moving said web in the direction of its length in relation to said.

ment thereon toward and away from said feed,

roll, and cam means with respect to which said frame is movable operatively connected to said pressure roller for moving the latter on said frame toward and away from said feed roll when I said frame is moved about the axis of said feed roll, said cam means being stationary and said frame having spring operated means for resiliently holding said pressure roller in pressure-applying relation to said feed roll when said frame is in said predetermined position thereof and for yieldingly opposing movement of said'pressure roller by said cam means away from said feed roll during the movement of said frame to said retracted position thereof.

11. In a recorder provided with means for marking a record on a web of sheet material and with means for moving said web from a supply source in the direction of its length in relation to said marking means; a support for the web having an edge over which the web travels from said source and which extends transversely of the web in juxtaposition to said marking means,

and a movable frame carrying said support and movable from a normal position in which said support is positioned between said Web-moving means and both said supply source and marking means for supporting the web to a retracted position in which the web support is clear of and completely separated from the web, and a pair of Web guides constructed and arranged to direct the web so that portions thereof which are at opposite sides of said edge diverse downwardly from said edge during the travel of the web, said web guides being relatively movable and one of said guides being movable with said frame to release and clear the web when the frame is moved to said retracted position thereof, in which position the web extends directly from said source to said web-moving means for the automatically realignment of the web with said one guide, said support and said marking means on the return of the frame to its normal position.

12. In a recorder provided with means for marking a record on a web of sheet material, a stationary frame, a driven feed roll mounted in said frame for rotation for moving the web in the direction of its length, a movable frame mounted for turning movement about the axis of said feed roll, a web support carried by said movable frame, and a pressure roller carried by said movable frame for rotation about an axis parallel to the axis of the feed roll, said web support and said pressure roller being movable about said axis of the feed roll from an operative position, in which said pressure roller cooperates with said feed roll to move the web in the direction of its length and in which the support positions the web in operative relation to said marking means, to a retracted position in which said pressure roller is spaced from said feed roll in parallel relation thereto to facilitate the insertion of the leading end of the web between said feed and pressure rolls.

13. In a recorder provided with means for marking a. record on a web of sheet material, a stationary frame, a driven feed roll mounted in said frame for rotation for moving the web in the direction of its length, a movable frame mounted for turning movement about the axis of said feed roll, a web support carried by said movable frame, and a pressure roller carried by said movable frame for rotation about an axis parallel to the axis of the feed roll, said Web support and presser roller being movable about said axis of the feed roll from an operative position, in which said pressure roller cooperates with said i roll to move the web in the direction of its 1 ngth and in which the support positions the web in cperive relation to said marking means, to a retracted position in which said pressure roller is spaced from said feed roll in parallel relation thereto to facilitate the insertion of the leading end of the Web between said feed and pressure rolls, means on said movable frame for guiding said pressure roller for sliding movement toward and away from said feed roll, spring means biasing said pressure roller toward said feed roll and pressing the pressure roller against said feed roll in said operative position.

14. In a recorder provided with means for marking a record on a web of sheet material, a stationary frame, a driven feed roll mounted in said frame for rotation for moving the web in the direction of its length, a movable frame mounted for turning movement about the axis of said feed roll, a Web support carried by said movable i'rame, and a pressure roller carried by said movable frame for rotation about an axis parallel to the axis of the feed roll, said web support and said pressure roller being movable about said axis of the feed roll from an operative position, in which said pressure roller cooperates with said feed roll to move the web in the direction of its length and in which the support positions the web in operative relation to said marking means, to a retracted position in which said pressure roller is spaced from said feed roll in parallel relation thereto to facilitate the insertion of the leading end of the web between said feed and pressure rolls, means on said movable frame for guiding said pressure roller for sliding movement toward and away from said feed r011, spring means biasing said pressure roller toward said feed roll and pressing the pressure roller against said feed roll in said operative position, and cam means operable on said pressure roller during the movement of the latter to said retracted position thereof for moving said pressure roller against said spring means to position said pressure roller in said spaced position in relation to the feed roll.

15. A recorder as defined by claim 12, wherein said pressure roller is disposed at the front 0i said reed roll, in the operative position or said pressure roller, and at the back or said feed roll in the retracted position or said pressure l'Ullcl.

16. In a recorder provided with means including a feed roll and a companion pressure roller for feeding a web in the direction or its length and with means for marking a record on the web during said movement or the latter, a frame carrying said reed roll for rotation about an axis transversely of the web reed, a movable weo support mounted for movement about said axis or the feed roll concentrically therewith, said web support being swlngaoly movable about said axis from an operative position, in which it supports the Web rearwardly of the feed roll 1n operative relation to said marxing means, to a retracted position forwardly of said feed roll to facilitate the insertion of the leading end or the was between said reed roll and said companion pressure roller.

11'. In a recorder provided with means including a feed roll and a companion pressure roller 10]. feeding a web in the direction or its length and With means 1'01 marxing a record on the web during said movement or the latter, a frame carrying said reed roll for rotation about an axis transversely of the web feed, a movable web support mounted for movement about said axis or t e feed roll concentrically therewith, said web support being swingably movable about said axis from an operative position, in which it supports the web rearwardiy of the leed roll in operative relation to said marking means, to a retracted position forwardly of said Ieed roll to facilitate the insertion of the leading end of the Web between said i'eed roll and said companion pressure roller, and guides carried. by said last mentioned and first mentioned frames, respectively, for respectively guiding the web from the source of web supply to said support and for guiding the web from said support to said feeding means, said guide on the movabl frame being automatically retracted from the web, while the web is engaged with the other of said guides, when said support is moved to said retracted position thereof.

18. In a recorder provided with means including a feed roll and a companion pressure roller for feeding a'web in the direction of its length and with means for marking a record on the web during said movement of the latter, a frame carrying said feed roll for rotation about an axis transversely of the web feed, a movable web support mounted for movement about said axis of the feed r011 concentricall therewith, said web support being swingably movable about said axis from an operative position, in which it supports the web rearwardly of the feed roll in operative relation to said marking means, to a retracted position forwardly of said feed roll to facilitate the insertion of the leading end of the web between said feed roll and said companion pressure roller, said movable frame comprising a guide which is movable therewith and is positioned to automatically engage and disengage the web concomitantly with the movement of said web support to and from said operative position thereof.

19. In a recorder provided with means including a feed roll and a companion pressure roller for feeding a web in the direction of its length and with means for marking a record on the web during said movement of the latter, a frame carrying said feed roll for rotation about an axis 25 transversely of the web feed, a movable web support mounted for movement about said axis of the feed roll concentrically therewith, said web support being swingably movable about said axis concomitantly with the movement of said web support to and from said operative position thereof, and a companion guide carried by said stationary frame and positioned in relation to said movable frame to automatically engage and disengage the web concomitantly with. the movement of said web support to and from said operative position thereof.

GEORGE GORHAM.

REFERENCES CITED The following references file of this patent:

UNITED STATES PATENTS Number Name Date 1,757,012 Foote May 6, 1930 1,820,088 Parker et al. Aug. 25, 1931 1,987,406 Ma Jan. 8, 1935 2,412,639 Traugott Dec. 17, 1946 are of record in the 

